Adaptive Microphone Array Employing Calibration Signals. An Analytical Evaluation
| Document type: | Journal Articles |
|---|---|
| Article type: | Original article |
| Peer reviewed: | Yes |
| Author(s): | Sven Nordholm, Ingvar Claesson, Mattias Dahl |
| Title: | Adaptive Microphone Array Employing Calibration Signals. An Analytical Evaluation |
| Journal: | IEEE transactions on speech and audio processing |
| Year: | 1999 |
| Volume: | 7 |
| Issue: | 3 |
| Pagination: | 241-52 |
| ISSN: | 1063-6676 |
| Publisher: | IEEE |
| City: | New York |
| ISI number: | 000079911300001 |
| Organization: | Blekinge Institute of Technology |
| Department: | Dept. of Signal Processing (Institutionen för signalbehandling) Dept. of Signal Processing S-372 25 Ronneby +46 455 780 00 http://www.hk-r.se/isb/isb_en.html |
| Authors e-mail: | Sven.Nordholm@isb.hk-r.se |
| Language: | English |
| Abstract: | This paper gives an analytical description of an adaptive microphone array that facilitates a simple built-in calibration to the environment and instrumentation. This method, suggested for use in hands-free mobile telephones and speech recognition systems for cars, provides speech enhancement and acoustic echo-cancellation. The scheme offers several advantages, such as a simple calibration procedure, suppression of directional sources, versatile robust beamforming, and reduced target signal distortion. The analysis employs noncausal Wiener filters yielding compact and effective theoretical suppression limits |
| Subject: | Signal Processing\Beamforming |
| Note: | Submitted for publication to IEEE Transactions on Speech and Audio Processing, December 1996 |
